how can i find out which macro is running
 

I have a workbook created by someone else to analyse exam results.
I have had to add 3 columns to it, but now when i go to the menu button
within the workbook, to change to chart view it doesn't show the last 3
columns on the chart.
I have never used macros before and do not know the author to ask their help.
how can i find out which macro is running, and make it see the extra 3
columns?